Update app.py

app.py

@@ -85,7 +85,7 @@ async def setup_agent(settings):
     agent = initialize_agent(
         llm=llm,  # our LLM (default is GPT-4 Turbo)
         tools=[
-            rag
+            rag_tool
         ],  # our custom tool used to retrieve context
         agent=AgentType.STRUCTURED_CHAT_ZERO_SHOT_REACT_DESCRIPTION,  # the agent type we're using today
         memory=memory,  # our memory!